text: 
  int _foo(int a, int b) {
      return a + b;
  }
  
  
  int main() {
      int a = _foo(0, 0);
      return a;
  }
  
  
  int bar(int a, int b, int c) {
      int rst = 0;
      while (a < b) {
          rst <<= c;
          a += 1;
      }
      return rst;
  }
  
  